There are 2 mapsets for Klooni released by Megabyte. Both are very well made. The first is Monthly Maps for Klooni - 3 levels, and the other is Demonoid - 10 levels. Both sets of files need Klooni to play and need to be extracted to the Klooni folder. Also needed to play is either DOOM2.WAD, PLUTONIA.WAD or TNT.WAD from the original Doom II or Final Doom.